content: /*
   * Copyright 2011-2016 David Karnok
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package ix;
  
  import java.util.Iterator;
  
  final class IxMinLong extends IxSource<Long, Long> {
  
      IxMinLong(Iterable<Long> source) {
          super(source);
      }
  
      @Override
      public Iterator<Long> iterator() {
          return new MinLongIterator(source.iterator());
      }
  
      static final class MinLongIterator extends IxSourceIterator<Long, Long> {
  
          MinLongIterator(Iterator<Long> it) {
              super(it);
          }
  
          @Override
          protected boolean moveNext() {
              Iterator<Long> it = this.it;
              if (!it.hasNext()) {
                  done = true;
                  return false;
              }
              long sum = it.next();
  
              while (it.hasNext()) {
                  sum = Math.min(sum, it.next());
              }
  
              value = sum;
              hasValue = true;
              done = true;
              return true;
          }
  
      }
  }
  